The House today is discussing the Senate's changes to the bill. The House initially passed the measure last year.
Republicans say voting ID is an issue of integrity. Democrats say it would prevent elderly, disabled and poor residents who don't have a photo ID from voting.
The compromise approved by the Senate in February would delay changes until 2012. It would also continue to allow in-person absentee voting up to a month early, if voters give an excuse for why they can't vote on Election Day.
The House version ended that opportunity when it allowed no-excuse early voting during a 15-day window.